A marinade is a mixture of acid, oil and spices that can add flavor and tenderize meats. Though the concept has been traditionally applied to meats, its use has been expanded to include poultry, and even seafood and vegetables. The food is allowed to soak and absorb all the essences, making it acquire unique and complex flavors. Every cook can make his marinade distinct and flavorful depending on the simplicity or complexity of the ingredients used. For those who want complex flavors or have a delicious marinade without much effort, the market is swamped with premixed/packaged marinades.